TFB REVIEW: Strike Industries G4 SlideComp

I am not a pistol compensator kind of guy. Either I am shooting suppressed or I am carrying a stock pistol on my hip. And a “Roland Special” is a term that is akin to nails over a chalkboard for me – yes, I know the setup and its usefulness, however I just wish the combo didn’t have a call sign. Besides, this gunfighter setup requires a fair amount of customization, including a match grade, threaded KKM barrel and compensator. For those who can’t/won’t alter their carry pistol, Strike Industries has come up with an innovative compensator setup – the G4 SlideComp uses a recoil guide rod extension for mounting and no barrel modifications.

It’s not often that we are allowed to test and evaluate truly innovative gear – as good as most products are, most of them are modifications or variations on a proven theme. However, even though I don’t partake in the comp, I can honestly say that the Strike SlideComp is a genius design rooted in utility.

But before we dig into the installation and use, a few caveats:

My first name is not ‘Roland’ and I am definitely not Special. I am not a gunfighter nor do I pray to the compensator gods. And given the choice and mission requirements, I will pick a threaded barrel and a suppressor every day and twice on Sunday.

Having said all that, I believe I can give you an honest, real-world assessment of Strike’s latest release as it pertains to the “typical” shooter/concealed carrier. Lastly, it is your responsibility to follow all firearms safety rules when handling, shooting, maintaining and owning guns. Your life, and others, depend on it.

Sorry for the interruption, now on with the show.

Overview and Installation:

Rather than my normal pictorial installation guide, let’s take a look at the short and simple video that lays out the ease at which the G4 SlideComp is added to a Gen4 Glock.

In a nutshell:

  1. Visually and physically check to make sure the pistol is unloaded and that there is no round in the chamber.
  2. Disassemble the slide from pistol per Glock standard instructions.
  3. Remove the recoil spring/guide rod combination.
  4. Install the “guide rod extension” (my words)
  5. Install the included Strike Industries included recoil spring/guide rod combination.
  6. Install the compensator
  7. Insert/tighten the six included locking screws (use a thread locking compound as directed)
  8. Reassemble to Glock specifications and function check

The whole process takes less than five minutes.

One observation here: The included Strike Industries G17 recoil spring assembly is more like a plastic Gen 3 version rather than a metal Gen 4 version. And while it performed flawlessly, my preference would be to use the stock Gen 4 assembly. Note: I used the included G17 recoil spring in the G19 without issue.

G4 SlideComp Specifications:

  • 1x G4 SlideComp
  • 4x M5 Installation set screw (side)
  • 2x M4 installation set screw (bottom)
  • 1x 2mm Allen wrench
  • 1x Glock 17 gen 3 guide rod and spring
  • Eliminates the need for threaded barrels
  • Blended, no snag profile
  • Precision CNC machined
  • No permanent modification of weapon required
  • Compatible with fourth generation G17, G19, G22, G23, G31, G32
  • Compatible with open-bottomed holsters
  • MSRP: $79.95

Note: The recoil spring assembly supplied is compatible with full size models. Compact models such as Glock 19 and equivalents require purchase of a Gen 3 compact spring for optimal functionality.

If it matters, in my opinion the G4 SlideComp looks great on the end of the Glock slide. Strike did a great job in machining a flush fitting and geometry-matching extension that almost looks like a factory option. A slide/comp cerakote match would make for a slick looking blaster.

Shooting with the G4 SlideComp:

As I mentioned, I’m not a compo-phile, so shooting the SlideComp was a relatively new experience for me. But I have to say, I was impressed with how flat shooting the pistol was, especially with double taps or strings. Sure, there is still a bit of flip and recoil, but it is measurably less than a bare muzzle.

I only have about 100 rounds through this compensator, but in that time I didn’t experience any malfunctions or operating issues. It does add some bulk to the front of the gun, but in comparison to a weaponlight, the addition is minimal.

The extra length will make your holster choice a little more limited, but with the increasing popularity of comps on carry guns, most holster makers have models that will accommodate the SI G4.

Overall, the SlideComp was pleasant to shoot and made me rethink my aversion to pistol compensators.



The G4 SlideComp is a fully functional, easy into install and rugged compensator that is exceptionally innovative in its design. One of the real powers of the Strike design is that it does not require a threaded barrel or gunsmithing, saving the added cost. On top of that, in states that restrict the use of threaded barrels, the SlideComp is a welcome sight to pistol compensator lovers.

Personally, I love small, innovative designs like this one from Strike Industries, even if I am not (yet) a fan of pistol comps. This is solid kit. For those interested in compensating for something (I’ll be here all week) the sub $80 MSRP is almost a no brainer.


  • Adds length and mass (standard for all comps)


  • Doesn’t use Stock Gen 4 spring


  • Easy install
  • No threaded barrel or gunsmithing required
  • Flat shooting
  • Looks like a factory option

Strike Industries G4 SlideComp

Strike Industries presents the industry’s first slide mounted compensator for Glock Gen4 pistols, with the SIG4 SlideComp. By mounting the compensator to the slide, the SI-G4-SCOMP requires no permanent modification to the host platform, and eliminates the need for a threaded barrel. The profile of the compensator aligns with the slide for holster compatibility, while the internal geometry and ports work to reduce muzzle rise and perceived recoil. For one handed manipulations, the compensator can be used to push-wrack the slide against hard surfaces, to clear malfunctions or lock the slide back for a reload. Combine with the SI-GUM for ultimate gunsmith-free“go-fast” Glock that can still be reverted to stock configuration.

Strike Industries – Facebook


LE – Science – OSINT.
On a mission to make all of my guns as quiet as possible.
Twitter: @gunboxready
Instagram: @tfb_pete


  • Joel

    The SI video indicated that loctite ought to be used on the screws during installation. Is it necessary to remove these screws for field stripping and barrel removal/ cleaning? Also, was there any change in pistol accuracy?

    • Dr. Longfellow Buchenrad

      Do people still clean their guns?

      • Giolli Joker

        Glocks are dishwasher safe, aren’t they?

        • Jerry C

          The funny thing about that is years ago I had a customer walk in with a Smith & Wesson 629 for repair that had all the internals rusted through.
          He says to me “I thought you claimed this was a stainless gun?”
          I said it is why?
          He says “Well the damn things rusted out”
          I asked if it had been dropped in salt water?
          And he says “No but I figured if it was stainless why should I clean it when I can just run it through the dishwasher?”
          He ran it through EVERY time he went shooting and after a year it seized up.
          When I explained only the outside was stainless he took it back and never came back with it.

        • BattleshipGrey
          • Giolli Joker

            Stippling 2.0.

    • Pete – TFB Writer

      Yes, if I were leaving this comp on a pistol semi-permanently I’d use blue locktite. However, you can still remove the barrel and recoil spring and clean as normal.

  • Christopher Wallace

    hmm i like it but the lack of a 19 length gen 4 guide rod is kind of a deal breaker imo

    • Pete – TFB Writer

      You’d have to buy a stock 19 spring. Plus the 17 spring worked fine.

      • Christopher Wallace

        yeah a gen 3 spring set up with an adapter for the gen 4 slide. i have on laying around that came witha a used g19 i picked up. dont trust it and swapped back to a gen 4 recoil assembly

        • Scott Wagner

          You don’t need an adapter to use a Gen3 spring in this. It is the adapter at the same time.

          • Christopher Wallace


  • ClintTorres

    The irony is that neither threaded (pistol) barrels nor Gen4 Glocks are legal to purchase in CA. Strike Industries is based in CA so one would think that this product was meant to circumvent our lame-ass laws here.

    • Pete – TFB Writer

      Pretty sure that’s in the works.

      • Scott Wagner

        Not sure it’s possible. For the same reason that it uses a Gen 3 spring setup (Not, “like” a gen3. It’s a straight up OE Gen 3 spring it uses). It still has to allow the spring to go forward, which means that on a Gen 3 you’d have to have the extension piece on the slide itself be ~.000″ thick, or else it won’t clear the spring.

        There’s simply no room for them to do it with a Gen 3 gun.

        • Pete – TFB Writer


    • Go Faster

      I’d say there’s possibly restrictions and they are not allowed to sell them in Comifornia

      • Christian Hedegaard-Schou

        There is no law against bolt-on comps like this one in CA.

    • USMC03Vet

      Wouldn’t putting something like that on your evil baby killer product in California result in mass shelter in place warnings and eventually crimes against humanity charges in the first place? Who wants the wrath of a 30 caliber magazine clip in half a second with the thing that goes up politician?

      • Christian Hedegaard-Schou

        No. There is no law restricting bolt-on comps like this one in CA.

  • Christian Hedegaard-Schou

    This is about as useless as 1911 barrel bushing comps.

    The only reason they “work” is because they add mass to the gun. They don’t actually help with redirecting gases because the exit bore must be large enough for the outside diameter of the barrel.

    If you’ll notice every single ACTUAL comp that’s used in real race guns, competition, etc, are either threaded to an extended barrel or are permanent extensions of the barrel so that the exit bore diameter is just enough for the bullet to exit and redirect the gases up through the comps ports, instead of just rushing past the bullet.

    It amazes me that the entire firearms industry STILL gets fooled by these things today.

    • James

      You need to check their slow motion video. I saw it once.
      The comp re-direct the gas and did the job. (Still can’t compare with thread barrel comp.)

      • Christian Hedegaard-Schou

        Yeah you might want to re-watch the video. Of course, some small amount of gas will go through the ports, there’s holes there. But 99% of the gas is going straight out the front.

        Again, these “work” because they add weight/mass to the front of the slide which delays unlocking and slows it down, reducing perceived recoil.

        But they would work just as well without ports in the top because they don’t actually work as compensators.

        • Jared Vynn

          Calling BS on 99%. The gas is under thousands of PSI as the bullet leaves, that isn’t going to expand solely in one direction but expand wherever it can. The fireballs we see from some calibers is proof of this. And flash hiders wouldn’t work if what you are saying was true.

          • Christian Hedegaard-Schou

            Did you watch the video? There is no indication of any gas jetting out the top of the “compensator”.

            Also I never said this thing WASNT a flash hider. Just that it wasn’t a comp, because comps don’t work when the hole is massively larger than the caliber for which they are supposed to function.

  • BillC

    Essentially, “I hate comped Glocks, but since it’s Strike Industries, I love it!!!!!” TheStrikeIndustriesBlog(dot)com

    • Pete – TFB Writer

      Thanks for your vote of confidence. It’s always nice when someone questions your integrity.

      It worked for the time I had to review it, period. Just because it’s not my choice of gear, doesn’t mean others won’t find it useful.

    • Blake

      God this cliche sentiment is getting so old. How dare the gun blog cover the products a gun company is putting out. The frequency that Strike puts out products is totally up to TFB right?

      Also, just because you’re not capable of complex thoughts and perceptions doesn’t mean the author isn’t.

  • Allon

    With “only about 100 rounds” and no data or real measurement of accuracy or muzzle rise you declare it “fully functional”?

    • Phillip Cooper


    • Pete – TFB Writer

      That’s why I told you I only have 100 rounds through it. It’s fully functional for what I put it through. I’m not sure that’s hard to understand.

      • Allon

        Yeah, I got that part – what’s hard to understand is how that’s considered a “review”

        • Pete – TFB Writer

          I was upfront about my limitations.

          Since these are unpaid reviews, I’d gladly shoot the case of ammo your willing to send my way. 100 rounds is about all I can afford.

          The review is worth as much as you paid for it. Take it or leave it.

  • Phillip Cooper

    So, this seems like a good place for TLDR.,.,

    “I won’t alter my carry pistol”
    “Here’s my altered carry pistol”

    “I hate Roland Specials”
    “Here’s mine”.

    Um… what??!?!

    • Pete – TFB Writer

      It’s not my carry pistol. I can’t alter my carry pistol.

      I don’t like comps on guns, but I was assigned to review a comp and it work well for the time I had it.

      Am I supposed to give it a bad review because I personally don’t like compensators?

      You don’t like honesty, don’t read my posts.

      • Phillip Cooper

        Come on, don’t ruin a good opportunity for snark with things I already knew…

    • ShooterPatBob

      While humorous as your comment is, the author is a gun gear writer and it’s his job to test these products, not buy them.
      They should have sent this to Patrick, aka Rowland Special lover.

      • Pete – TFB Writer

        Actually, funny you say that. I’m sending this one to Patrick tomorrow. The thought was give it to someone who is on one side of comps to write about it, then have someone who knows/uses comps to shoot a video on it.

        So great thought!

        • Jared Vynn

          I think it’s better not to have someone who likes/uses comps to review them, and same for other gear. Less chance of confirmation bias or attempting to justify a purchase.

    • Flounder

      We only hate everyone elses roland specials…
      But we all have one.

      Funny how that works.

      • Pete – TFB Writer

        I don’t have a Roland or Fauxland.

        • Flounder

          Do you have a pistol with an optics mount? Because that and a rail pretty much gets you a fauxland. XD and yes, i love that term

  • PK

    I’m sure that I’m just nitpicking, but I’d love to see more than just the two images with the slide closed. Most of them have it locked back, and it’s hard to get a feel for how it would look.

  • gunsandrockets

    I wonder how it compares to using an aftermarket longer barrel with barrel porting?

    • mrsatyre

      Or the standard length factory ported slides that are already available for several models.

  • Scott Wagner

    “One observation here: The included Strike Industries G17 recoil spring assembly is more like a plastic Gen 3 version rather than a metal Gen 4 version. And while it performed flawlessly, my preference would be to use the stock Gen 4 assembly. Note: I used the included G17 recoil spring in the G19 without issue.”

    It’s not “more like” a Gen 3 spring. It is a Gen 3 spring, as the design of the comp reduces the allowable spring size, so they sized it to take standard Gen 3 parts to make it as easy as possible.

    • Pete – TFB Writer

      Thanks Scott. I was unclear if it was OEM Glock.

    • Nicks87

      So does that mean I can use aftermarket Gen 3 recoil springs with my Gen 4 pistol w/ the SlideComp mounted?

      • Scott Wagner

        Should be able to? I’ll be honest, didn’t have aftermarket springs available when I was playing around with one for a couple of days.

    • Markius Fox

      This makes me want to test this on my Gen 2 19.

  • El Duderino

    Don’t own any Gen4s. Guess I can’t easily tame that vicious 9mm recoil.

  • mrsatyre

    I’m a little fuzzy on the specs. Is the same compensator compatible with the 9 and 40 Glocks? Or is there a different model number for each? Or is the diameter of the port in the compensator wide enough to handle 40?

    • Pete – TFB Writer

      One that is “Compatible with fourth generation G17, G19, G22, G23, G31, G32”

  • drambus

    So adding weight to the slide, slowing it down, but also meaning more weight transfer front to back. The comp is attached to the slide, therefore the gasses are impinging on the slide because the comp is redirecting gas upward/outwards and presumably backwards slightly (like proper comps should). This should also slow down the slide. Limp-wristing a glock can cause a malfunction, I’m actually quite surprised it functions well.

    I think a dedicated comp would be noticeably better. Then again it also means all the extra components and money.

  • BrandonAKsALot

    I was curious to see if this thing worked at all. I wonder how much is weight helping vs design. I don’t own a Glock and I don’t speak Glockanese so all this gen X, Y stuff has me lost.

  • Matt Frikin Bennett

    Useless until they make one that will enable my Glock 34 to be even more ridiculous.

  • Jread100

    I’m wondering the same exact thing you mentioned in point #1 and am kind of surprised noone has addressed that… one gun the comp extends out the end as described, and then one has the comp flush with the end of the frame. What gives?

    Is it possible that one gun is a 34/17L with a 19/17 slide and the comp recessed into the frame? This is baffling me!

    • Pete – TFB Writer

      Some pictures are of the slide locked to the rear. But they are all on a G19. The light throws it off.

  • Mikey

    What’s that SureFire device in the 2nd picture?

    • Jon Hammett

      Surefire holster

    • Pete – TFB Writer

      Surefire Masterfire. Review up earlier this week.

  • Pete – TFB Writer

    Thanks. I try. Appreciate the kind words.

  • Pete – TFB Writer

    Some of the pics are of the slide locked to the rear.

  • Gavin M Powell

    Demo ranch video. 👍🏾